公开(公告)号：US20050035758A1

公开(公告)日：2005-02-17

申请号：US10639981

申请日：2003-08-13

申请人： Paul Waszkowski ,  David Taneyhill ,  Mark Bennett

发明人： Paul Waszkowski ,  David Taneyhill ,  Mark Bennett

IPC分类号： B60T8/171 ,  G01D5/245 ,  G01P3/481 ,  G01P13/04 ,  G01B7/30

CPC分类号： B60T8/171 ,  G01D5/2457 ,  G01P3/481 ,  G01P13/04

摘要： A tone ring preferably for use in a braking system of a vehicle has a first pattern of excitation indicative of speed of rotation of the tone ring, and a second pattern of excitation including frequency variations that is indicative of direction of rotation of the tone ring. The tone ring is rotated past a sensor, preferably a 2-wire passive sensor. A series of events are sensed during rotation of the tone ring past the sensor. The timing of occurrence of the events is detected and, on the basis of the timing detection, the direction of rotation of the tone ring is determined.

摘要翻译： 优选地用于车辆的制动系统的音圈具有表示音圈的旋转速度的第一激励模式，以及包括指示音圈的旋转方向的频率变化的第二激励模式。 音圈旋转经过传感器，最好是2线无源传感器。 在通过传感器的音圈旋转期间感测到一系列事件。 检测事件发生的时间，并且基于定时检测，确定音调的旋转方向。